City Sightseeing Berlin Hop-On Hop-Off Tour. Explore the best Berlin has to offer on this hop-on hop-off bus tour. Choose from three different routes and visit many of Berlin’s top attractions — like Brandenburg Gate, Checkpoint Charlie, the Berlin Wall Memorial and Olympic Stadium, to name a few. Select a 1- or 2-day pass, then board at any of the stops and get to know the city in custom fashion, with live on-board commentary in English and German. Audio guides in English, German, French, Spanish, Italian, Polish, Russian, Chinese and Japanese are available on the Classic Route. Book and Save 10%: City Sightseeing Berlin Hop-On Hop-Off Tour.